This file is indexed.

/usr/lib/x86_64-linux-gnu/libusb-1.0.so is in libusb-1.0-0-dev 2:1.0.19-1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /lib/x86_64-linux-gnu/libusb-1.0.so.0.1.0